Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
power now and rad valve on a rm 125? any other go fast mods?
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="robwbright, post: 1055911, member: 60515"] The pistons I use are manufactured by Wiseco and designed by Eric Gorr (who built my motor). They're regularly available thru him and thru any local shop that will order an aftermarket piston for you. You could also order yourself through the internet. Eric's 144 piston design weighs 16 grams (about 1/2 ounce) more than a stock 125 piston, so there's not much extra weight there to put stress on the crank. One fellow here was 200+ lbs and was racing a 2002 RM144 at very hilly Glen Helen. He rebuilt the crank after 18 months of every weekend racing. I thought that was pretty good reliability. I sent off the motor and received it back in a week and a half. It was $450-$500 for the overbore, plating, port, polish, head mods, case mods, piston, ring and re-assembly. The kit adds 6-8 HP - i.e you'll go from a stock 32 HP to approx. 38-39 HP. The effect is amazing. I went from 11/52 gearing to 12/50 gearing and I'm still a gear lower everywhere on the track. Further, the bike still revs out better than stock. However, Eric is out of business until maybe September or October. Others do the work, but he was definitely the most reputable and also the least expensive. His website (currently being remodeled) is [url]http://www.ericgorr.com[/url] You could also check RPM Motorsports and others. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
power now and rad valve on a rm 125? any other go fast mods?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom